SQL Server的隐藏特性

SQL Server有哪些隐藏特性?

例如，没有文档的系统存储过程，做一些非常有用但没有足够文档的事情的技巧?

答案

感谢大家的精彩回答!

存储过程

sp_msforeachtable: Runs a command with '?' replaced with each table name (v6.5 and up) sp_msforeachdb: Runs a command with '?' replaced with each database name (v7 and up) sp_who2: just like sp_who, but with a lot more info for troubleshooting blocks (v7 and up) sp_helptext: If you want the code of a stored procedure, view & UDF sp_tables: return a list of all tables and views of database in scope. sp_stored_procedures: return a list of all stored procedures xp_sscanf: Reads data from the string into the argument locations specified by each format argument. xp_fixeddrives:: Find the fixed drive with largest free space sp_help: If you want to know the table structure, indexes and constraints of a table. Also views and UDFs. Shortcut is Alt+F1

片段

Returning rows in random order All database User Objects by Last Modified Date Return Date Only Find records which date falls somewhere inside the current week. Find records which date occurred last week. Returns the date for the beginning of the current week. Returns the date for the beginning of last week. See the text of a procedure that has been deployed to a server Drop all connections to the database Table Checksum Row Checksum Drop all the procedures in a database Re-map the login Ids correctly after restore Call Stored Procedures from an INSERT statement Find Procedures By Keyword Drop all the procedures in a database Query the transaction log for a database programmatically.

功能

哈希字节（） EncryptByKey 枢轴命令

Misc

Connection String extras TableDiff.exe Triggers for Logon Events (New in Service Pack 2) Boosting performance with persisted-computed-columns (pcc). DEFAULT_SCHEMA setting in sys.database_principles Forced Parameterization Vardecimal Storage Format Figuring out the most popular queries in seconds Scalable Shared Databases Table/Stored Procedure Filter feature in SQL Management Studio Trace flags Number after a GO repeats the batch Security using schemas Encryption using built in encryption functions, views and base tables with triggers

当前回答

跟踪旗帜!“1204”在SQL Server 2000上的死锁调试中是无价的(2005有更好的工具)。

2008-09-24 13:11:34

其他回答

SQL Server 2005:

select * from sys.dm_os_performance_counters

select * from sys.dm_exec_requests

2008-09-23 16:05:02

以下是一些我认为有用但很多人似乎不知道的功能:

sp_tables

返回可以为的对象列表在当前环境下查询。这意味着任何对象都可以出现在FROM子句中，同义词除外对象。

Link

sp_stored_procedures

中存储过程的列表当前环境。

Link

2008-09-23 14:18:59

跟踪旗帜!“1204”在SQL Server 2000上的死锁调试中是无价的(2005有更好的工具)。

2008-09-24 13:11:34

我最喜欢master..xp_cmdshell。它允许您从服务器上的命令提示符运行命令并查看输出。如果你不能登录到服务器，但你需要获取信息或以某种方式控制它，它是非常有用的。

例如，列出运行SQL server的服务器C:驱动器上的文件夹。

主. .Xp_cmdshell ` dir c:\ `

您还可以启动和停止服务。

主. .xp_cmdshell的sc查询“My . 服务”的主. .xp_cmdshell 'sc stop“My . 服务”的主. .xp_cmdshell 'sc start“My . 服务”的

它很强大，但也有安全隐患。许多人禁用它，因为它很容易被用来在服务器上做坏事。但是，如果你能接触到它，它会非常有用。

2008-09-26 14:31:04

行构造函数

您可以用一个插入语句插入多行数据。

INSERT INTO Colors (id, Color)
VALUES (1, 'Red'),
       (2, 'Blue'),
       (3, 'Green'),
       (4, 'Yellow')

2009-12-18 19:39:27

SQL Server的隐藏特性

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